System Instructions

Create Account

/// --- programs/system/src/system_processor.rs ---

declare_process_instruction!(Entrypoint, DEFAULT_COMPUTE_UNITS, |invoke_context| {
    let transaction_context = &invoke_context.transaction_context;
    let instruction_context = transaction_context.get_current_instruction_context()?;
    let instruction_data = instruction_context.get_instruction_data();
    let instruction = limited_deserialize(instruction_data)?;

    trace!("process_instruction: {:?}", instruction);

    let signers = instruction_context.get_signers(transaction_context)?;
    match instruction {
        SystemInstruction::CreateAccount {
            lamports,
            space,
            owner,
        } => {
            instruction_context.check_number_of_instruction_accounts(2)?;
            let to_address = Address::create(
                transaction_context.get_key_of_account_at_index(
                    instruction_context.get_index_of_instruction_account_in_transaction(1)?,
                )?,
                None,
                invoke_context,
            )?;
            create_account(
                0,
                1,
                &to_address,
                lamports,
                space,
                &owner,
                &signers,
                invoke_context,
                transaction_context,
                instruction_context,
            )
        }
        /// ...
      }
      /// ...
  }